package com.icoolkj.ms.pay.service.impl;

import com.icoolkj.ms.pay.service.PayService;
import com.icoolkj.ms.api.pay.model.PayOrder;
import com.wechat.pay.contrib.apache.httpclient.auth.PrivateKeySigner;
import com.wechat.pay.contrib.apache.httpclient.auth.WechatPay2Credentials;
import com.wechat.pay.contrib.apache.httpclient.util.PemUtil;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import lombok.extern.slf4j.Slf4j;

import java.io.FileInputStream;
import java.security.PrivateKey;
import java.util.HashMap;
import java.util.Map;

@Slf4j
@Service("wechatPayService")
public class WechatPayServiceImpl implements PayService {

    @Value("${wx.pay.appId}")
    private String appId;

    @Value("${wx.pay.mchId}")
    private String mchId;

    @Value("${wx.pay.privateKeyPath}")
    private String privateKeyPath;

    @Value("${wx.pay.notifyUrl}")
    private String notifyUrl;

    @Override
    public Map<String, String> createOrder(PayOrder payOrder) {
        try {
            // 加载商户私钥
            PrivateKey merchantPrivateKey = PemUtil.loadPrivateKey(
                    new FileInputStream(privateKeyPath));

            // 创建签名器
            PrivateKeySigner privateKeySigner = new PrivateKeySigner(mchId, merchantPrivateKey);
            WechatPay2Credentials credentials = new WechatPay2Credentials(mchId, privateKeySigner);

            // 构建支付参数
            Map<String, Object> params = new HashMap<>();
            params.put("appid", appId);
            params.put("mchid", mchId);
            params.put("description", payOrder.getSubject());
            params.put("out_trade_no", payOrder.getOrderNo());
            params.put("notify_url", notifyUrl);

            Map<String, Object> amount = new HashMap<>();
            amount.put("total", payOrder.getAmount().multiply(new java.math.BigDecimal("100")).intValue());
            amount.put("currency", "CNY");
            params.put("amount", amount);

            // TODO: 调用微信支付API
            // 这里需要使用WechatPayHttpClientBuilder构建HttpClient
            // 发起JSAPI支付
            
            Map<String, String> result = new HashMap<>();
            result.put("orderNo", payOrder.getOrderNo());
            // result.put("prepayId", response.getPrepayId());
            return result;
        } catch (Exception e) {
            log.error("创建微信支付订单失败", e);
            throw new RuntimeException("创建支付订单失败");
        }
    }

    @Override
    public boolean handlePayNotify(String payType, Map<String, String> params) {
        try {
            // TODO: 验证签名
            // 解析支付结果通知
            // 更新订单状态
            return true;
        } catch (Exception e) {
            log.error("处理微信支付回调失败", e);
            return false;
        }
    }

    @Override
    public PayOrder queryOrder(String orderNo) {
        try {
            // TODO: 实现订单查询逻辑
            return null;
        } catch (Exception e) {
            log.error("查询微信支付订单失败", e);
            throw new RuntimeException("查询支付订单失败");
        }
    }

    @Override
    public boolean closeOrder(String orderNo) {
        try {
            // TODO: 实现关闭订单逻辑
            return true;
        } catch (Exception e) {
            log.error("关闭微信支付订单失败", e);
            return false;
        }
    }

    @Override
    public boolean refund(String orderNo, String refundReason) {
        try {
            // TODO: 实现退款逻辑
            return true;
        } catch (Exception e) {
            log.error("微信支付退款失败", e);
            return false;
        }
    }
} 